Senior Software Engineer, Lending Platform

Airwallex; Singapore; On-site; SGD 150,000 - 210,000; Full time

Job summary

Airwallex Singapore is seeking an experienced backend engineer to design and deliver robust, scalable lending platforms. You will own services, APIs, and system reliability, partnering with product and security teams to embed credit products for enterprise clients.

The role requires 5+ years in software engineering, strong Java/Kotlin, Spring Boot, REST APIs, and hands-on leadership. You’ll mentor engineers, drive architecture decisions, and champion CI/CD and observability in a global,

Qualifications

• Bachelor's degree in CS/Engineering or related field.
• 5+ years in software engineering with backend systems.
• 2+ years in technical leadership, mentoring engineers.
• Strong OO programming with backend experience.
• Experience with Java or Kotlin and Spring Boot.
• RESTful APIs design and tooling experience.
• Domain-driven and event-driven architectures in production.
• High-throughput, low-latency distributed systems experience.
• Cloud experience with AWS or GCP; Docker and Kubernetes.
• Observability tooling familiarity (Splunk, Grafana, Prometheus).

Responsibilities

• Own design and delivery of services powering lending and credit products.
• Build secure, scalable APIs for embedding credit products.
• Lead design reviews and mentor engineers on architecture and quality.
• Drive resilient distributed design for global scale.
• Improve platform stability via automated testing and monitoring.
• Collaborate with cross-functional teams to deliver lending solutions.

Skills

Software engineering

CI/CD

Technical leadership

Backend systems

Java/Kotlin

Spring Boot

RESTful APIs

Domain-driven design

Event-driven architectures

Distributed systems

Cloud (AWS/GCP)

Docker

Kubernetes

Observability tools

Education

Bachelor's degree in CS/Engineering

Tools

Spring Boot

Docker

Kubernetes

AWS

GCP

Prometheus

Grafana

Splunk

Job description

About Airwallex

Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 675,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through our platform partners, to run their financial operations or build and monetize financial products of their own.

We started in Melbourne in 2015 to build the infrastructure global commerce runs on. We're the regulated backbone behind global payments: not by accident, but by design. A decade plus, 85+ licenses, and a financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific.

We're co-headquartered in San Francisco and Singapore, with more than 2,700 people across 27 offices. We hire builders with founder-level energy, people who move fast with good judgment, dig in with real curiosity, and make calls from first principles rather than waiting to be told what to do. Read our operating principles to see it in full.

How you'll make impact

You’ll architect, design, and implement large-scale, secure, and scalable systems for Airwallex’s lending platform. You’ll build robust services and secure APIs that help enterprise clients embed credit products into their own offerings, while laying the technical foundation for future financing products.

• Own the design and delivery of robust services that power lending and credit products.

• Build secure, scalable, and well-documented APIs that enable clients to embed and consume credit products within their own offerings.

• Lead design reviews, advise on systems architecture, and mentor engineers to raise the bar on code quality and technical excellence.

• Drive resilient distributed-systems design and engineering practices that support reliability, scalability, and security at global enterprise scale.

• Improve platform stability and delivery efficiency through automated testing, code review, monitoring, and continuous improvement.

• Partner with cross-functional teams to deliver effective lending solutions and stay close to industry trends that can strengthen the platform.

This is an in-office role — you’ll be in our Singapore office five days a week.

What we're looking for

Essentials

• A bachelor’s degree or above in Computer Science, Engineering, or a related technical field.

• 5+ years of hands-on experience in software engineering, with strong exposure to modern engineering practices, continuous integration, and quality engineering.

• At least 2 years in a technical leadership role, mentoring engineers and leading the definition and execution of engineering strategy.

• A strong computer science foundation and object-oriented programming skills, with proven experience building backend systems.

• Experience with Java or Kotlin and the Spring / Spring Boot framework, or strong transferable experience in another backend language and framework.

• Extensive experience designing and building RESTful APIs, with familiarity with modern API design principles and tools.

• Experience with domain-driven design and event-driven architectures in production environments.

• A track record of designing and maintaining high-throughput, low-latency, highly available distributed systems at scale.

• Cloud experience with GCP or AWS, including services such as EC2, RDS, ELB, or CloudFront, together with Docker and Kubernetes.

• Familiarity with observability tooling such as Splunk, Grafana, and Prometheus.

• Experience collaborating with cross-functional teams to deliver effective lending or financial technology solutions.

• A commitment to robust automated testing, code review, monitoring, and continuous improvement.

Preferred

• Experience with SaaS products offered as a platform.

You'll thrive here if

• You're comfortable owning the roadmap yourself.

• You own the outcome and you don't wait for permission to fix what's broken.

• You're comfortable with ambiguity. Give you a problem, not a prescription, and you'll run with it.

• You're comfortable operating across time zones with a globally distributed team, including colleagues based in APAC and EMEA.

• You value in-person collaboration and are happy being in the office five days a week.

Learn more about your team

Lending at Airwallex brings together flexible capital and financial infrastructure so fast-growing businesses can scale with confidence. We own the end-to-end credit platform: the backend systems, risk engines, and integrations that power business credit products and embedded financing. The challenge is balancing speed with safety, building resilient, high-throughput services that assess creditworthiness in real time, orchestrate fund flows seamlessly, and scale reliably across global markets. This is a team for product-minded engineers who want ownership and enjoy solving complex technical problems. If you want to help redefine the financial infrastructure that lets businesses around the world grow, this is where that work happens.

#singapore

Equal opportunity

Airwallex is proud to be an equal opportunity employer. We value diversity and anyone seeking employment at Airwallex is considered based on merit, qualifications, competence and talent. We don’t regard color, religion, race, national origin, sexual orientation, ancestry, citizenship, sex, marital or family status, disability, gender, or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation, please let us know.